Ada Framework: Switch to gcc5-aux, upgrade 6 packages at once
The transition from gcc-aux to gcc5-aux in the Ada framework has been
blocked by the inability to build gtkada3 and, once resolved, GPS (due
to tight locking with compiler).
A few days ago, Adacore made their annual release of their main libre
products, include GPS. However, some products were tightly coupled with
the recent compilers, so in order to upgrade, the compiler had to be
switched and dependencies require many ports to be upgraded at once:
* lang/asis
* devel/gnatcoll
* devel/gps
* x11-toolkits/gtkada3